P0401 Diagnostic Trouble Code Discussion for June 2017
Insufficient EGR Flow Detected
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| Help Request | Posted | |
| 1997 Pontiac Bonneville SE 3.8L MIL Lamp on VIN: 1G2HX52K0V P0401: Insufficient EGR Flow Detected. ... MAP volts on scanner. KOEO I only read 1.9 volts- should read 4.0 to 4.8 . the MAP has been substituted w/ 2 new Delphi units w/no change. PCV O-rings are intact, V power to MAP is 5V. MAP,TPS & FTP all share the ground back to PCM. Jumper wire Vpower ... |
June 16, 2017 |
